  - A
- Addendum, 202
- Air, Pressure of, 20
- Aluminum, Compensation with, 48
- Anchor Escapement, 141
- Angular Measurement, Peculiarities of, 102
- Apparent Time, 348
- Arbors, Polishing Steel, 232
- “Straightening Bent, 231
- Arc of Escapement, 93, 109, 115, 127, 138, 145, 153, 164, 186, 469
- Armatures, Adjustment of, 389, 409
- Astronomical Clocks, 493
- “Day, 348
- Auxiliary Weights, 37
- B
- Balance, Vibrations of, 180
- Banking, 90, 156, 160, 170, 176
- Barometric Error, 20
- Barrels, 244, 267, 465, 485
- “Chiming, 370
- Batteries, 380
- “Dating, 392
- “Grading, 384
- “Making, 383
- “Position of, 385
- “Wiring, Methods of, 385
- Beat, to put a Clock in, 89
- Bells, 369
- “?Ships, 315
- Brocot’s Calendar, 359
- “Visible Escapement, 127, 128
- Bushing, 476
- C
- Cables, Clock, 269
- “Lengths of, 271
- Calculations of Weights, 57
- Calendars, 347
- “Brocot’s, 359
- “Gregorian, 349
- “Julian, 349
- “Perpetual, 353
- “Simple, 350
- Carillons, 372
- 161
- “Le Paute’s Pin Wheel, 135
- “Pin, 185, 193
- “Recoil, 141
- “To draw Graham, 113
- ““?Pin Wheel, 138
- ““?Gravity, 152
- “ Western Clock Mfg. Co., 193
- Examination of Cylinders, 171
- Expansion of Metals, 22
- F
- Fan, 308, 326
- Fly for Gravity Escapement, 158
- Frames, Making, 261
- “Thickness of, 474
- Four-hundred Day Clocks, 91
- Friction, Disengaging, 203
- “Engaging, 203
- “of Teeth, 132
- “Springs, 294
- G
- Gathering Pallet, 338, 344
- Gilding, 459
- Gong Wires, 369
- Graham Escapement, 109, 467
- Gravity, Center of, 18
- “?Escapement, 150
- Gregorian Calendar, 349
- H
- Half Hour Striking Work, 334, 342, 345
- Hammers, 367
- “?Hardening, 198, 480, 482
- “?Springs, 368
- “?Tail, 298, 301
- Hands, 439
- “?Proportions of, 440
- “?To Balance, 442
- “?To Blue, 444
- Hour Rack, 335
- “?Snail, 296, 334
- “?Strike, 342
- “?Wheel, 96, 293, 296, 325
- Hypocycloid Curves, 206
- I
- Iron, Expansion of, 57
- Information, Need for, 3
- Isochronism, 469
- J
- Jeweling, 475, 167, 173, 199, 474
- “?Side Shake, 199
- Planes, Lifting, 116
- Plates, Clock, 198
- “?Thickness of, 474
- Poising Balance Staffs, 189, 190
- Polishing Steel Arbors, 232
- Posts, Clock, 478
- Power, 264, 265, 266, 267
- “?Maintaining, 285
- Putting in Beat, 89
- R
- Rack, Division of, 335
- “?Striking Work, 331
- Ratchet, 288
- Rating Nut, 42, 50, 66
- “?With Shot, 90
- Reading Drawings, 98
- Repeating Clocks, 332
- Recoil Escapement, 141
- Regulation, 79
- Regulator Trains, 492
- Regulators, Making, 463
- Repairing Dials, 432, 438
- Resistance Spools, 388
- Rieffler Pendulum, 49, 75
- Rounding-Up, 174, 221, 223
- ““?Rules for, 226
- Run, 108
- Rusting of Cones, 190
- S
- Screws, Clock, 483
- Secondary Dials, 417
- Self-winding Clocks, 376
- Ship Bells, Striking, 313
- Shot, Rating with, 90
- Sidereal Day, 348
- “?Month, 349
- “?Pendulums, 493
- “?Year, 349
- Side Shake, Cylinder, 167
- “?“For Pivots, 199
- Silvering Dials, 434
- Simple Calendar, 350
- Sizes of Teeth, 211, 213, 237
- “?“?Wheels, 201
- Slide Gauge Lathe, 241,
Big Ben BIG BEN is the first and only alarm sold exclusively to jewelers. He is without exception the finest sleepmeter made—the best looking, the best built, the best running. Big Ben is a beautiful thin model alarm clock standing 7 inches tall and mounted in a reinforced triple plated case. He is fitted with big strong easy winding keys, clean cut heavy hands and a large open winsome dial, distinctly visible across the largest room. Big Ben rings just when you want and either way you want, intermittently for fifteen minutes, continuously for ten, and he rings with a jolly full-tone ring that will arouse the drowsiest sleeper. Big Ben is rigidly inspected, six days factory timed and tested. He works only for jewelers and then only for certain jewelers—those that agree to sell him for not less than $2.50. We pay his railroad fare on all orders for a dozen or more, we brand him with your name in lots of 24. Height 7 inches. Dial 4½ inches. Intermittent or Long Alarm. Dealers’ names printed free on dials in lots of 24. Freight allowed on orders for one dozen or more. Western Clock Mfg. Co. New York La Salle, Illinois Chicago
HOROLOGICAL DEPARTMENT—
Bradley Polytechnic Institute THIS entire building used exclusively for instruction in watchwork, jewelry, engraving and optics, is thoroughly equipped with all modern tools for use in connection with the work as required in any up-to-date jewelry store. Competent instructors as heads of each department and several assistants, so that all may be kept busy. ¶ If you would like to get all or any one of the branches mentioned above, it will pay you to investigate Bradley. With our increased facilities we can take care of all who wish to come. ¶ Don’t put off till tomorrow or next week the sending of a post card addressed to HOROLOGICAL, Dept. A., Peoria, Ill., asking for one of our latest books telling all about Modern Methods as applied at this truly great institution.
SELF WINDING CLOCK CO. NEW YORK
Self Winding Synchronized Clocks,
Primary and Secondary Clock Systems,
for
Railroads, Public and Office Buildings,
Hotels, Universities, Colleges,
Schools and Private Residences. Self Winding Program Instruments,
Jewelers’ Regulators,
Bank Clocks,
Tower, Post and Bracket Clocks.
Making Clocks to Architects’ designs
a specialty. Hourly signals of correction from the U. S.
Observatory at Washington, D. C. over the
lines of the Western Union Telegraph Co.
In 1854 Waltham Watches awakened Europe to the fact that the American method of manufacturing produces the best watches. Since that time the burden of proof has been successfully carried by 17,000,000 WALTHAM WATCHES all representing the highest stage of the watchmakers’ art.
Howard Clocks Are modern in the sense
that they are the best
timekeepers in the world
although we have been
making them since 1842,
when our business was
established by Edward
Howard. We guarantee
satisfaction and respectfully
solicit your business. The E. Howard Clock Co. BOSTON, NEW YORK AND CHICAGO Makers of Clocks but only of the highest grade
in their respective lines Jewelers’ regulators, electric
clocks, house and office clocks,
locomotive and engine room
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clocks, post or side
walk clocks, tower clocks,
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| Ingersoll-Trenton | | $5 | | to | | $15 | | The Best Seven Jewel Watch | | GUARANTEED | The first watch guarantee ever issued was that placed on the cheapest watch ever made—the Dollar Watch—nineteen years ago. For those nineteen years while selling nearly nineteen million Ingersoll watches, we have been asking: “Why are expensive, jeweled watches not guaranteed?” The Ingersoll-Trenton is the first and only high grade 7-jewel watch made complete and cased in one factory; and therefore, the only one that can be guaranteed by its makers; others are assembled from movements made in one factory and cases from another, by the dealer, often a competent jeweler, but often, too, without facilities such as the adjusting and timing systems existing in our complete watch factory. The “I-T” has all features of the most recent, costly watches, which secure accuracy. “I-T” gold-filled cases contain gold enough to outlive their guarantees. Sold only through responsible jewelers, who buy direct. If not on sale in your town we will send, prepaid express, on receipt of price. INGERSOLL WATCHES For seventeen years there has been but one standard in everyday watches; “Ingersolls” have popularized the very use of watches. One friend says, “They have made the dollar famous.” They have never been so worthy of their great reputation as to-day. Fully guaranteed. They include; The Dollar Watch; the “Eclipse” at $1.50; the new thin model “Junior” at $2.00; and the “Midget” ladies’ size at $2.00. Sold by 60,000 dealers or post-paid by us. ROBERT H. INGERSOLL & BRO. New York Chicago London San Francisco
THE GREAT
AMERICAN
CATALOGUE
Have you added this Salesman to your selling force? Purchasing Goods from the Great American Catalogue insures prestige and the confidence your customers will bestow upon you will be apparent in increased patronage. Our Catalogue meets with cordial approbation of old stand-by customers who are in a position to judge of the meritorious results obtained through constant use, as the best purchasing medium. Please permit us to send you a copy.
The Oskamp-Nolting Co. No. 411-413-415-417 ELM ST.
Cincinnati :: :: :: Ohio.
MOSELEY | Made Continuously | Imitated—but | | for over 30 years | NEVER EQUALED | The Standard of Excellence Nothing is overlooked in their manufacture and no expense is spared to make them RIGHT. The Genuine Moseley Lathe of to-day is the result of years of painstaking, systematic and skilled endeavor to satisfy the exacting requirements of the most critical and experienced workmen. Moseley Chucks are of the best quality, and are made in all sizes; covering every need of the Watchmaker and Repairer. These Chucks and Lathes were manufactured by us for years under the direct supervision of CHAS. S. MOSELEY, the inventor of the “Split Chuck” and “Draw-n-Spindle.” Moseley Lathes and Attachments, with plenty of Moseley Chucks are the secret of rapid and accurate work. They increase your earning power by enabling you to do more work in a day. As an investment they pay big dividends. Write your JOBBER for the NEW MOSELEY
CATALOG—INSTRUCTION—REFERENCE BOOK No. 11
“YOU NEED IT EVERY DAY.” “THERE’S NO LATHE LIKE THE MOSELEY”
Clock Tools and Clock Materials
form an important and extensive
item of stock in our Tool and
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Nickel plated, $0.50 In Clock Springs, we keep the best polished only; our stock consisting of all the most desirable widths on the market. If you do not possess our large Tool and Material Catalogue, kindly send us your business card and procure one. We can save you time, money and annoyance; we are anxious to make your acquaintance, as we treat our customers with the utmost courtesy and attention. A trial order solicited. Otto Young & Co. Wholesale Jewelers and Importers and Jobbers
Diamonds, Watches, Clocks, Jewelry, Tools,
Materials and Optical Goods. Heyworth Building, Chicago
Transcriber's Note:
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